#0  0x00757aef in __ast_pthread_mutex_trylock (filename=0x75a513 "chan_local.c", lineno=176, func=0x75a60e "local_queue_frame",
    mutex_name=0x75a629 "&other->lock", t=0xb7bfc5b8) at /usr/src/asterisk-1.4.11-debug/include/asterisk/lock.h:345
        res = 0
        canlog = -1
        __PRETTY_FUNCTION__ = "__ast_pthread_mutex_trylock"
#1  0x007574d2 in local_queue_frame (p=0xb7bf8c38, isoutbound=0, f=0x993ec84, us=0xb7bfcd48) at chan_local.c:176
        other = (struct ast_channel *) 0xb7bfc540
        __PRETTY_FUNCTION__ = "local_queue_frame"
#2  0x00758670 in local_write (ast=0xb7bfcd48, f=0x993ec84) at chan_local.c:292
        p = (struct local_pvt *) 0xb7bf8c38
        res = -1
        isoutbound = 0
        __PRETTY_FUNCTION__ = "local_write"
#3  0x080890c4 in ast_write (chan=0xb7bfcd48, fr=0x98fe7dc) at channel.c:2940
        res = -1
        f = (struct ast_frame *) 0x993ec84
        __PRETTY_FUNCTION__ = "ast_write"
#4  0x0808cc7f in ast_generic_bridge (c0=0xb7bfcd48, c1=0x990de68, config=0x9819d78, fo=0x5550280, rc=0x555027c, bridge_end=
      {tv_sec = 0, tv_usec = 0}) at channel.c:4066
        monitored_source = 2
        who = (struct ast_channel *) 0x990de68
        other = (struct ast_channel *) 0xb7bfcd48
        cs = {0x990de68, 0xb7bfcd48, 0xb7bfcd48}
        f = (struct ast_frame *) 0x98fe7dc
        res = AST_BRIDGE_COMPLETE
        o0nativeformats = 256
        o1nativeformats = 8
        watch_c0_dtmf = 0
        watch_c1_dtmf = 2
        pvt0 = (void *) 0xb7bf8c38
        pvt1 = (void *) 0xb7b49160
        frame_put_in_jb = 0
        jb_in_use = 0
        to = -1
        __PRETTY_FUNCTION__ = "ast_generic_bridge"
#5  0x0808dcf0 in ast_channel_bridge (c0=0xb7bfcd48, c1=0x990de68, config=0x9819d78, fo=0x5550280, rc=0x555027c)
    at channel.c:4316
        now = {tv_sec = 0, tv_usec = 0}
        to = -1
        who = (struct ast_channel *) 0x0
        res = AST_BRIDGE_COMPLETE
        nativefailed = 0
        firstpass = 1
        o0nativeformats = 256
        o1nativeformats = 8
        time_left_ms = 0
        nexteventts = {tv_sec = 0, tv_usec = 0}
        caller_warning = 0 '\0'
        callee_warning = 0 '\0'
        __PRETTY_FUNCTION__ = "ast_channel_bridge"
#6  0x004029ae in ast_bridge_call (chan=0xb7bfcd48, peer=0x990de68, config=0x9819d78) at res_features.c:1398
        other = (struct ast_channel *) 0x0
        f = (struct ast_frame *) 0x0
        who = (struct ast_channel *) 0x807c04f
        chan_featurecode = '\0' <repeats 11 times>
        peer_featurecode = '\0' <repeats 11 times>
        res = 488
        diff = -1212156432
        hasfeatures = 0
        hadfeatures = 0
        aoh = (struct ast_option_header *) 0x3a4ed
        backup_config = {features_caller = {flags = 0}, features_callee = {flags = 0}, start_time = {tv_sec = 0, tv_usec = 0},
        feature_timer = 0, timelimit = 0, play_warning = 0, warning_freq = 0, warning_sound = 0x0, end_sound = 0x0,
        start_sound = 0x0, firstpass = 0, flags = 0}
        bridge_cdr = (struct ast_cdr *) 0x0
        __PRETTY_FUNCTION__ = "ast_bridge_call"
#7  0x003fdb20 in ast_bridge_call_thread (data=0x9819d78) at res_features.c:238
        tobj = (struct ast_bridge_thread_obj *) 0x9819d78
        __PRETTY_FUNCTION__ = "ast_bridge_call_thread"
#8  0x0810fd0b in dummy_start (data=0x989f6d0) at utils.c:775
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {14442484, 0, 89459600, 89457592, 2110755604, 1888119886},
      __mask_was_saved = 0}}, __pad = {0x5550470, 0x0, 0x8153b44, 0x13b}}
        __cancel_routine = (void (*)(void *)) 0x806a755 <ast_unregister_thread>
        __cancel_arg = (void *) 0x5550b90
        not_first_call = 0
        ret = (void *) 0xdb6afc
        a = {start_routine = 0x3fda00 <ast_bridge_call_thread>, data = 0x9819d78,
  name = 0x990d8a8 "ast_bridge_call_thread started at [  254] res_features.c ast_bridge_call_thread_launch()"}
        lock_info = (struct thr_lock_info *) 0x990e370
        __PRETTY_FUNCTION__ = "dummy_start"
#9  0x00db73db in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#10 0x00b0426e in clone () from /lib/libc.so.6
No symbol table info available.